Core binder



Patented Sept. is, nae. I entree snares earner crates.

EGAN HQMENY GEORGE B. HILL,- OF INDIANAPOLIS, INDIANA, AIGNQB TO M! J-- COMPANY, OE INDIANAPOLIS, INDIANA, A WORATIQN @F NEW 3 CUBE BINDER.

Ito Drawing. Application filed september 15, 1am. serial No. seams.

To all'whomz'tmay concern: ging or swelling regardless of the compli- Be it known that I, Gnonon B. HILL, cated outlines or large size-0f the same. By a citizen of the United States, residing at the use of this binder I am enabled in many Indianapolis, in the county of Marion and cases to avoid the necessity of using loamy 1 State of Indiana, have in vented certain new sand in connection with the ordinary sharp and useful Improvements in .Core Binders, sand in order to make delicate cores stand of which the following is a specification. up in the green.

This invention relates to core ,binders, I- have found that this binder is three or especially to a vegetable binder such as a four times as efiicient as wheat flour and to flour used as a binder in making cores in is ordinarily used in one-third or one-fourth foundry work. It is among the. objects the proportion. This binder difiers widely of this invention to produce a binder which from' dextrin, partially dextrinized starch, burns out quicklyt in the hot casting, proand similar materials giving a much harder duces very little or no gas, and gives elascore with the use of a smaller quantity of is ti it nd h d t th b1nder.. It. appears that the protein which In carrying the objects of my invention is contained in the gelatinized flour has the into efi ect' I provide a flour, generally a beneficial efi'ects of allowing contraction of corn flour, which preferably is produced the core giving greater elasticity than other by a special process. This flour, when used materials, and at the same time retaining as a binder, permits the cores to contract the hardness of the'core. It also allows the u on contraction of the casting, thus avoidc re to be eas1ly broken into small pieces ing any strain in the casting due to a rigid 1n orderto remove the same from the cast core, and it further allows the core to leave iIig. It has the further advantage over th c ting very ily, wheat flour and similar materials in that In producing this flour I take the degermit requires no cooking or steaming of the inated portion of corn which is in the form core, and the mixture is self-drying and of grits or mealflake, but usually I utilize adhesive. the finer portions of the meal, since. they are Having thus fully described m said inundesirable by-products in the production vention, what I claim as new and desire to so of edible corn products, such as hominy secure by Letters Patent, is:

grits. The'material is steamed and then 1. A core binder comprising corn flour rolled while still warm to the thinness of made from the degerminated portion of tissue paper to at least partially gelatinize the'kernel. the starch and destroy the cellular structure 2. A core binder comprising dry gelatas rendering proteid matter available to aqueinized corn flour containing proteids. 011s; solvents by reason of the fine subdi- 3. A core binder comprising corn flour vision and relatively large surface area of obtained by steaming and rolling the degerthe particles. The material is now parminated portion of corn and grinding the tially soluble in water and is ground to th flakes so formed. so so fineness desired. 4. A core binder comprising dry par- The binder. is mixed with water giving tially gelatinized corn fiour, the proteid mata smooth gelatinous mass having large bulk ter in which is finely divided and has a reland great distributing properties. The maatively large surface area. terial doesnot actas a flour but mor like In witness whereof, I have hereunto set l 45 an oil leaving the crevices between the sand my hand and seal at Indianapolis, Indiana, grains, with which it is mixed, free and this 11th day of September, A. D. nineteen open. The new binder may be used in comhundred and nineteen.

bination with oil and when so used allows GEORGE E. HILL. [1b. a] the amount of oil ordinarily used in a sand Witnesses: core to be reduced to a very small quantity. H. C. BIERMAN,

Such cores hold their shape without sag- M. L. Snminn. 

